AEG Moulded Case Circuit Breakers MC9 400-630A

AEG Moulded Case Circuit Breakers MC9 400-630A

The MC409 and MC639 breakers have respectively 400A and 630A rated current, in the same size. They can be equipped with two type of electronic protection trip unit: the standard type and the SMR2 type.
The standard electronic protection is a new generation of trip unit, with a very wide range of threshold (from 0,3 to 1 In), and many functions like LS (Long time delay, Short time delay), LSI (with additional Istantaneus protection channel), LSIG (with Ground protection channel).
On the front of the trip unit, there is a micro USB port where it is possible to connect a PC and supply the unit to check the tripping functions.
All the standard electronic type breakers have the possibility to adjust the Neutral protection as 0%, 50%, 100% of the rated current.
The SMR2 trip unit is used when it is necessary to adjust the time delay of the protection. It has also many additional modules to increase communication or protections.